Datasheet ICM7555, ICM7556 (Intersil) - 4

link to page 4 link to page 4 link to page 4 link to page 4 ICM7555, ICM7556 Electrical Specifications Applies to ICM7555 and ICM7556, unless otherwise specified. (Continued) (Note 8) TA = +25°C -55°C TO+125°C PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT Reset Voltage VRST VDD = 2V to 15V 0.4 1.0 0.2 1.2 V Reset Current IRST VDD = 15V 10 50 nA Discharge Leakage IDIS VDD = 15V 10 50 nA Output Voltage VOL VDD = 15V, ISINK = 20mA 0.4 1.0 1.25 V VDD = 5V, ISINK = 3.2mA 0.2 0.4 0.5 V VOH VDD = 15V, ISOURCE = 0.8mA 14.3 14.6 14.2 V VDD = 5V, ISOURCE = 0.8mA 4.0 4.3 3.8 V Discharge Output Voltage VDIS VDD = 5V, ISINK = 15mA 0.2 0.4 0.6 V VDD = 15V, ISINK = 15mA 0.4 V Supply Voltage (Note 7) VDD Functional Operation 2.0 18.0 3.0 16.0 V Output Rise Time (Note 7) tR RL = 10M, CL = 10pF, VDD = 5V 75 ns Output Fall Time (Note 7) tF RL = 10M, CL = 10pF, VDD = 5V 75 ns Oscillator Frequency fMAX VDD = 5V, RA = 470Ω, RB = 270Ω, 1 MHz (Note 7) C = 200pF NOTES: 7. These parameters are based upon characterization data and are not tested. 8. Applies only to military temperature range product (M suffix). Functional Diagram
VDD FLIP-FLOP 8 4 RESET OUTPUT R COMPARATOR DRIVERS THRESHOLD A 6 + 5 OUTPUT CONTROL - 3 VOLTAGE R 7 DISCHARGE n + TRIGGER 1 2 - COMPARATOR R B 1 GND
NOTE: This functional diagram reduces the circuitry down to its simplest equivalent components. Tie down unused inputs. FIGURE 1. FUNCTIONAL DIAGRAM
TRUTH TABLE
THRESHOLD VOLTAGE TRIGGER VOLTAGE RESET OUTPUT DISCHARGE SWITCH Don’t Care Don’t Care Low Low On >2/3(V+) >1/3(V+) High Low On <2/3(V+) >1/3(V+) High Stable Stable Don’t Care <1/3(V+) High High Off NOTE: RESET will dominate all other inputs: TRIGGER will dominate over THRESHOLD. FN2867 Rev 1.00 Page 4 of 13 June 28, 2016